What is the typical drag coefficient of a sedan?
1 Answers
The drag coefficient of a sedan generally ranges between 0.3 and 0.51, with air resistance calculated as Ra=10KAV(N), where A represents the frontal area. Below is more related information: 1. Air Resistance: When a sedan travels at 80 km/h, approximately 60% of the power is used to overcome air resistance. During driving, air resistance generates longitudinal, lateral, and vertical aerodynamic forces around the vehicle's center of gravity, with the longitudinal force being the largest, accounting for over 80% of the total air resistance. The air resistance coefficient is determined through wind tunnel testing. Since air resistance is directly proportional to the drag coefficient, modern sedans focus on reducing this coefficient to minimize air resistance. 2. Precautions: Before driving in windy conditions, check the vehicle's window seals for aging, detachment, or cracks to prevent dust from entering the cabin. Keep all windows, including the sunroof, closed while driving, and use the air conditioning in recirculation mode to avoid external air exchange. Reduce speed in strong winds, identify wind direction correctly, and hold the steering wheel firmly to prevent the vehicle from drifting. Maintain lateral stability and minimize overtaking. When driving against the wind, be cautious of sudden wind direction changes or sharp turns, as reduced wind resistance can cause a sudden increase in speed. Watch for pedestrians who might suddenly cross the road to avoid dust kicked up by the vehicle.
